PNAS Nexus · 25 September 2026 · From issue 42

Salient air pollution mobilizes bottom-up green engagement: Evidence from the world’s largest green mobile program

Bad air days made people use a green rewards app more and plant more trees.

Jiafu An, Jiawen Huang et al.

Integrity screen: passed (3 checks) Checked 6 October 2026. Read the source

The plain-language reading of this paper is in the full issue, for subscribers.

Read the full issue

Get it free, every two days

Five papers free every issue, about 15 emails a month. No spam. Leave in one click.

Also in issue 42 14 papers

Young people at each HIV stage show a different pattern of inflammation in their blood.
Nature Communications
Ignoring higher borrowing costs in poorer nations raises global climate costs by about 9%.
Nature Climate Change
Hundreds of gene locations affect childhood weight but not adult weight in the same way.
Nature Genetics
In lab tests, a microwave device stored memory using special scattering points tied to magnetic history.
Nature Communications
In two fish species, matching brain scans reveals different brain areas control social behavior.
Nature Communications
In lab tests, squeezing then reheating a heat-to-electricity material made it much stronger without weakening its power.
Proceedings of the National Academy of Sciences
Bears invade towns more when forest seed cycles break down, not because bear numbers grew.
Science Advances
In computer models, a small plasma disturbance heats solar atmosphere gas by 43% on average.
The Astrophysical Journal
A destructive water pest hid in Ontario lakes a century before its known arrival date.
Proceedings of the National Academy of Sciences
Math limits show how fast large quantum systems can lose their special properties together.
Nature Physics
A new microscope method reveals single hydrogen atoms hiding inside metal materials.
Science Advances
Most ancient sea fossil beds are nearly fully searched, with little left to find.
Science Advances
In mice and human cells, stored pure sulfur protects fatty membranes from a damaging, cell killing reaction.
Science